/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package studio.raptor.ddal.core.engine;

/**
 * kernel of process engine.
 *
 * @author Sam
 * @since 3.0
 */
public abstract class Processor {

  private final ProcessEngine processEngine;

  protected Processor(ProcessEngine engine) {
    this.processEngine = engine;
  }

  protected ProcessEngine getProcessEngine() {
    return processEngine;
  }

  protected ProcessContext getProcessContext() {
    return this.processEngine.getProcessContext();
  }

  protected StatementContext getStatementContext() {
    return this.processEngine.getProcessContext().getStatementContext();
  }

  /**
   * Get working mode of processor.
   *
   * @return working mode of processor
   * @see WorkingMode
   */
  public abstract WorkingMode getWorkingMode();


  /**
   * Processor working mode.
   */
  public enum WorkingMode {
    JDBC(1, "JDBC"), PROXY(2, "PROXY");

    int modeCode;
    String modeName;

    WorkingMode(int code, String name) {
      this.modeCode = code;
      this.modeName = name;
    }

    @Override
    public String toString() {
      return "WorkingMode{" + "modeCode=" + modeCode + ", modeName='" + modeName + '\'' + "} "
          + super.toString();
    }
  }
}
